Update:
I'm working on a Mario Kart Medley for my achievement of 7k plays on Soundcloud. It's gonna include 4 of my favorite Rainbow Road tracks (DS, GC, 3DS, 64). This is the DS version. Some feedback would be nice in terms of what I could do better, what could change, etc.
Source:

Under Dreamstruction (Under Construction Remix)
I've taken the Happy Mood theme for Under Construction from the game NiGHTS into Dreams, and remixed it in my own way. Any feedback is appreciated as always.
Original: